US3833275A - Footstep bearing - Google Patents

Footstep bearing Download PDF

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Publication number
US3833275A
US3833275A US00342880A US34288073A US3833275A US 3833275 A US3833275 A US 3833275A US 00342880 A US00342880 A US 00342880A US 34288073 A US34288073 A US 34288073A US 3833275 A US3833275 A US 3833275A
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US
United States
Prior art keywords
bearing
bushing
spindle shaft
block
cylindrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00342880A
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English (en)
Inventor
G Wendel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Application granted granted Critical
Publication of US3833275A publication Critical patent/US3833275A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/08—Mounting arrangements
    • D01H7/12—Bolsters; Bearings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/042—Spindles with rolling contact bearings

Definitions

  • the present invention relates to footstep bearings for supporting the spindles of spinning and twisting machines and in particular to a two piece footstep bearing having improved characteristics of construction and function.
  • a footstep bearing comprising a first part namely, a tubular bushing, adapted to radially guide the spindle shaft and a second part namely, a bearing step located in the frontal end of the bushing.
  • the two parts are joined together in a compressive interlocking arrangement to provide a unitary assembly.
  • the interlocking is accomplished by compressing the bearing step so that it is swaged or press fit into the bushings, the compression being made, for example, by stamping or pressing the material at the same time that the race surface for the spindle shaft is formed.
  • the assembled two piece footstep bearing may be combined with other structural elements of the spindle bearings, for example, with a centering tube.
  • the exterior surface of the bearing bushing is provided with an annular groove, into which a conforming head or band made on the centering tube can fit, in a resilient manner.
  • FIG. 1 is a longitudinal section of the bearing busha
  • FIG.'-2 is a section similar to FIG. 1 showing the block from which the bearing step is formed, inserted in the bushings, and
  • FIG. 3 is a similar view showing the two parts in completed assembly and the compressive interlocking engagement.
  • the completed footstep bearing is generally depicted in FIG. 3 by the numeral 1 and is formed having a first part namely, a bearing bushing 2 and a second part namely, a bearing block 3 which are securely and permanently force fit together in a manner to be hereinafter described.
  • the upper frontal end of the bearing block 3 is shaped to provide a conical bearing step 4 on which the lower end of the shaft 5 of a spindle rests.
  • the step 4 absorbs the axial thrust of the spindle during operation.
  • the shaft 5 is also guided radially by the upwardly extending tubular bearing bushing 2, the inner surface 6 of which conformingly surrounds and engages the lower portion of the shaft 5.
  • the outer surface of the bushing 2 is provided with a circumferential groove 7 which holds the centering tube 8 which is itself provided with a corresponding inwardly directed annular bead, band or the like which compresses over the bushing in a resilient manner.
  • the centering tube 8 is se- 1 cured within a bolster (not shown) which is mounted on the machine frame.
  • the assembly may include other conventional means, such as resilient vibration dampeners, spaces, etc. Since the present invention is concerned solely with the form of the step hearing at the lower end, these means are not shown, for the sake of brevity.
  • FIGS. 1 and 2 The formation of the step 4 and the securement to the block 3 to the bushing 2 is depicted in FIGS. 1 and 2.
  • the bushing 2 is formed at its lower end with a cylindrical opening 9 having an upper circumferential edge 10 bevelled outwardly toward an inner cylindrical portion 11.
  • the opposite or outer edge 12 is similarly countersunk in an outward bevel.
  • the bearing block 3 is originally provided as a cylindrical slug having an axial length greater than the axial length of the cylindrical opening 9.
  • the cylindrical slug or block 3 is inserted into the opening 9 so that relative to one another theouter flat end 13 of the block 3 extends below the plane 14 of the lower end of the bushing 2, while the inner flat end 15 of the block 3 extends into the cylindrical section 11.
  • the bushing 2 and inserted block 3 are set on a conforming supporting surface, such as an anvil, and a stamping instrument having a die surface -conforming to the conical step 4 is placed on the flat inner end 15.
  • Pressure is applied on the stamping instrument by a conventional hammer, press or the like to cause the material of the block 3 to be deformed so that simultaneously with the creation of the conical step 4, the material is displaced and swaged to fill the countersunk edges 11 and 12 as seen in FIG. 3.
  • the bearing block 3 lies with its outer cylindrical face in secure engagement with the face of the opening 9 so that the entire block 3 is immovably held in the bushing 2.
  • the bushing 2 and block 3 can be made of different materials as for example steel and bronze respectively. This providesan economical construction while providing the axial thrust bearing block of a strong yet low friction material. Other materials can also be used, if desired, however, it is necessary in selecting the material for special uses that consideration be given to need for the material to be stamped or deformed into the necessary shape for the bearing step and press fit. Aside from this, consideration need only be given to the strength 'of the material to absorb the strong strain of operation. The material can be further chosen so that both the bushing and the bearing block have substantially the same life span. As a consequent, both parts will be replaceable simultaneously rather than separately.
  • the bushing 2 is preferably provided with a bore 16 extending transversely into the area 11.
  • the bore 16 enables lubricant to pass from the bolster or housing of the spindle into the bushing 2, to lubricate the axial end of the shaft 5.
  • the means for lubrication, bolster, housing etc., are well known in this art and require nofurther description.
  • the method of assembling the two pieces of the bearing, as by swaging and compressing provide a unitary assembly which can easily be handled, stored and installed without any difficulty, in exactly the same way as an ordinary one piece footstep bearing.
  • a further advantage accrues from the fact that each part may be separately formed from material chosen as most suits its particular function.
  • the bushing may be separately worked and formed. Since it is tubular, it is much easier in this way.
  • a footstep bearing for journalling the spindle shaft of a spinning and twisting machine comprising a tubular bearing bushing adapted to radially guide the spindle shaft and a bearing step located in the frontal end of said bushing adapted to absorb the axial thrust of said spindle shaft, said bearing step being compressed within said tubular bushing, said bushing being provided with recesses for receiving the material of the bearing step displaced by the compression thereof so as to be joined together in a compressive interlocking arrangement.
  • the bearing according to claim 1 including a centering tube adapted to support said bearing, said bearing bushing having a circumferential groove and said centering tube having a cooperating member adapted to fit within said groove and secure said bushing to said centering tube.
  • a footstep bearing for the spindle shaft of a spinning and twisting machine, said footstep bearing having a tubular bushing shaped to radially guide the spindle shaft and a step for absorbing the axial thrust of said spindle shaft comprising the step of forming said bushing with a cylindrical end, having at least one recess, providing a cylindrical block within the cylindrical end of said bushing, and compressing said block with a shaped tool to form an axial step conforming to the spindle shaft and to simultaneously deform said block to fill said cylindrical bushing end and said recess to be thereby secured in compressive interlocked engagement therewith.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sliding-Contact Bearings (AREA)
  • Insertion Pins And Rivets (AREA)
US00342880A 1972-03-24 1973-03-19 Footstep bearing Expired - Lifetime US3833275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7211322U DE7211322U (de) 1972-03-24 1972-03-24 Zweiteiliges Fußlager für Spinn- und Zwirnmaschinen-Spindeln

Publications (1)

Publication Number Publication Date
US3833275A true US3833275A (en) 1974-09-03

Family

ID=6629203

Family Applications (1)

Application Number Title Priority Date Filing Date
US00342880A Expired - Lifetime US3833275A (en) 1972-03-24 1973-03-19 Footstep bearing

Country Status (6)

Country Link
US (1) US3833275A (member.php)
JP (1) JPS5652137B2 (member.php)
CH (1) CH551504A (member.php)
DE (1) DE7211322U (member.php)
ES (1) ES412287A1 (member.php)
IT (1) IT979620B (member.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167845A (en) * 1977-03-16 1979-09-18 Skf Kugellagerfabriken Gmbh Axial guide for the shaft of a spinning rotor
US5987749A (en) * 1992-09-21 1999-11-23 U.S. Philips Corporation Method of manufacturing a dynamic groove bearing, die suitable for use in such a method, and housing and bearing part manufactured by such a method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55113824U (member.php) * 1979-02-05 1980-08-11
DE2913500C2 (de) * 1979-04-04 1985-10-24 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Einstückige metallische Aufsatzhülse und Verfahren zu ihrer Herstellung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US474286A (en) * 1892-05-03 Robert brewster
US1803151A (en) * 1928-09-26 1931-04-28 Whitin Machine Works Spindle
US3020104A (en) * 1956-11-26 1962-02-06 Edgar B Nichols Bearings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US474286A (en) * 1892-05-03 Robert brewster
US1803151A (en) * 1928-09-26 1931-04-28 Whitin Machine Works Spindle
US3020104A (en) * 1956-11-26 1962-02-06 Edgar B Nichols Bearings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167845A (en) * 1977-03-16 1979-09-18 Skf Kugellagerfabriken Gmbh Axial guide for the shaft of a spinning rotor
US5987749A (en) * 1992-09-21 1999-11-23 U.S. Philips Corporation Method of manufacturing a dynamic groove bearing, die suitable for use in such a method, and housing and bearing part manufactured by such a method

Also Published As

Publication number Publication date
JPS496231A (member.php) 1974-01-19
JPS5652137B2 (member.php) 1981-12-10
ES412287A1 (es) 1976-01-01
CH551504A (de) 1974-07-15
DE7211322U (de) 1972-06-29
IT979620B (it) 1974-09-30

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